Hatch-cover for marine vessels.



N... 746,929. PATENTED DB0. 15, 1909.

' W. W.YDAWLEY.

HATCH COVER POR MARINE VESSBLS. vLPPLIOA'IION FILEDfSEPT; 3, 1903. N0 MGDBL. 2 SHEETS-SHEET 1.

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--.memn- @muli PATENTBD DEC. 4l5, 1903.

W. DAWLEY. HATCH COVER POR MARINE VESSELS.

APPLICATION FILED4 SEPT. 3, 1903.

2 SHEETS--SHEET 2.

NO MODEL.

W/TNESSES:

A A from/E fs UNITED' STATES Patented Decemloer 1K5, IQ.

5PATENT OFFICE.

HATCH-COVER FOR MARINE VESSELS.

SPESFICATION forming part of Letters Patent N o. 746,929, dated December 15, 1903.

Application filed September 3, 1903. Serial No. 171,774. (No modem To all whom, it may concern:

Be it known that I, WINFIELD WE LLs DAW- LEY, a citizen of the United States, and a resident of Geneva, in the county of Ashtabula and State of Ohio, have invented a new and Improved Hatch-Cover for Marine Vessels, of which the following is a full, clear, and exact description.

The object of this invention is to provide a hatch-cover which may be readily shifted from one position to another on the deck of a vessel. A

In modern marine vessels,^especially in those constructed of iron or steel, the hatches must be made soheavy as to render their movement a very laborious task. My invention seeks to overcome this disadvantage, and to this end I employ a carrying wheel or wheels for the hatch -cover and means for raising the cover on `or lowering it from the support of the wheels. By this arrangement the cover may be lowered down on the hatch to close the same, and'when it is desired to uncover the hatch it is onlynecessary to raise the cover until it is supported by the carrying-wheels and then run the coverand wheels along the deck of the vessel until the hatch is quite uncovered.

This specification is an exact description of one example of my invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a fragmentary plan view of the invent-ion. Fig. 2 is a side elevation thereof. Fig. 3 is a transverse section on the line 3 3 of Fig. 4. Fig. t is a cross-section on the line 4 4 of Fig. 3, and Fig. is a detail section on the line 5 5 of Fig. 2.

10 indicates Jthe deck-line, and 1] the hatchcoaming, which latter may be of any form desired.

The hatch-cover here illustrated is constructed of sheet metal and comprises a body part or top i2, with longitudinal ribs or braces 14: and transverse ribs or braces l5, which strengthen the cover sufficiently toenable it Ato be sustained from the side edges thereof. the cover is constructed with a crown or rounding top which serves to strengthen the structure.

16 indicates a downwardly-projecting marginal flange which extends around the edges of the cover and is adapted to fit inside of the coaining il, the ledge 17, which projects outwardly from said ange, being provided with a rubber or other packing gasket 18, which engages the top of the coaming to make a water-tight connection.

19 indicates tie-bolts for battening down the cover.

0n each side of the cover is fastened a bracket 20, these'brackets projecting outward and having vertical jack-screws 2l arranged therein. Said screws have their loweruends arranged to turn freely in trucks 22, located one at each side of the hatch-cover, and the Ywheels 23 and 24 of which run on rails 25, laid fore and aft on the `deck of the vessel. The wheel 23 of each truck is constructed with an internal gear 26, and these gears are in mesh with spurs 27, fastened on shafts 28, which are mounted to turn `freely in the trucks 22, as best shown in Fig. 5.

Assuming that the hatch is closed, as in Fig. 3, and it is desired to uncover the same, by applying a suitable tool to the jack-screws 2l said screws may be operated to raise the cover and to support the same on the trucks 22, this elevation of the cover being suicient to clear it from the upper edge of the cnaming. The cover may then be run along the deck to any position desired, this movement of the cover being facilitated by the gears 26 27 and the shaft 28. If the vessel be provided with more than one hatch, the tracks or rails 25 of the respective hatches may be laid in different gages and the screws 21 arranged to lift the covers to different elevations. This will enable the covers t0 be run one over the other, and they may be all nested together, if desired, at one end of the deck of the vessel. the hatch covers are connected with the trucks 22 through the medium of the jackscrews 2l, and since these screws-are arranged to turn freely in the trucks any uneven movement between the two trucks will be to some extent allowed for, this allowance being sufficient for all practical purposes.

It will be observed that4 Various changes in the form, proportions, and minor details of my invention may be resorted to at will Without departing from the spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie Within the intent of my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A hatch-cover, comprising a cover proper 0r top, and longitudinal and transverse braces under the same arranged to give the cover a crown or rounding form,for the purpose speciiied.

2. Ahatch-cover,comprisingacoverproper or top, longitudinal and transverse braces under the same and arranged to give the cover a crown or rounding form for the purpose specified, and means engaging the edges of the cover to raise the same.

3. The combination ofa hatch-cover,a truck therefor, and means for mounting the truck on the cover.

4. The combination ofa hatch-cover,a truck therefor, and means for raising the cover on and lowering tbe cover from the truck.

5. The combination of a hatch-cover,a truck at each side thereof, and means for connecting the trucks with the cover.

'each truck, and brackets attached to the 6. Thecombinatiouofahatchcover,atruck 3o therefor,and means connecting the cover with the truck and including an elevating device, for the purpose specified.

7. Thecombination ofahatch-cover,a truck therefor,and means connecting the cover with 35 the truck and including a jack-screw to permit raising and lowering the cover.

8. The combinationofahatch-cover,a truck therefor, a gear in connection with one of the- Wheeis of the truck, a second gear meshed 4o with the first gear, and means for facilitating the operation of the second gear.

9. The combination ofa hatch-cover,a truck at each side thereof, a jack-screw mounted on 45 cover and having the jack-screws respectively operating therein.

10. A hatch-cover, comprising a body portion or top, and longitudinal and transverse ribs or braces fastened to the under side thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WINFIELD WELLS DAVVLEY.

Witnesses:

W. I-I. PUGSLEY, AUG. DoENITZ. 

